Air vent valve for an internal combustion engine fuel heat system



FIG. 1 is a perspective view of an air vent valve for an internal combustion engine fuel heat system showing my new design;

FIG. 2 is a front elevational view shown on a reduced scale;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof. 

The ornamental design for an air vent valve for an internal combustion engine fuel heat system, as shown and described. 